Tank port and coupling



June 21, 1949. E, w T

TANK PORT AND COUPLING Filed Nov. 18, 1946 INVENTOR.

Patented June 21, 1949 UNITED STATES TANK PORT AND COUPLING Gerald E. White, Middlevillc, Mich, assignor to White Products Corporation, Middleville, Mich.

Application November 18, 1946, Serial No. 710,581

"JAN 22 8 Claims.

This invention relates to improvements in a tank port and coupling.

The principal objects of this invention are:

First, to provide a port construction for a water tank or other similar structure which may be eter as illustrated in Figs. 3 and 4. An annular ring 8 countersunk on its outer surface as at 9 is then pressed around the drawneck and the outer end of the drawneck is spun radially outwardly as at Ill around the countersunk portion formed t relatively low t, 5 of the ring. The face of the drawneck is then Second, to provide ta port i121 aliitakclhinlg1 plmlipes ii efl grag g g d Sfiat :8 at lolfililzagig-dih 1 s or heating elemen s o a tan W ic Wi ave nm e no a eries e o e a single sealable joint with the fixture attached qr li fiy spaaced argutnd the peorl'limeteciiS thfereof t th t k W 10 are esigne 0 receive e en 0 cap Third, to provide means for easily and e- 10 screws i2 passed through mating 110168 in the curely coupling a fitting on a tank which will flange I3 of the fixture to be attached to the form a; single sealed junction between the tank A:- t p t ulafly 11 St t d F 3 th and fi ting, 1s mos ar 10 1 u ra e in 1g. e

Fourth, to provide a method for inexpensively 15 ting element fixture 5 comprises t e flange forming a port and coupling portion on a tank at 3 w qh defin a pan f ce t al aperadapted t receive a heating t, or pipe tures l4 open ng mto the drawneck 1. An inner coupling t plate l5 defining a pair of outwardly flange aperoth object and advantages pertaining t tures I6 is positioned on the inner surface of the economies and details of my invention will the fl p e ith the flanged ape res "i be apparent from the following description and i z j l l 31t1111e apertures I4 tinlt'hehfla gte P 21 claims, -s ape ea mg eemen as 1 s en 5 Th drawings of which there is one sheet, supported in the flanged apertures l6 and sei t t a preferred fo of my t and curely sealed thereto as by silver solder and pling as applied to a hot water heating tank. 25 :g (inductors 8 w ch e tend outwardly Fig. 1 is an elevational view of a water heat- Tough t e apertures n i sulating meming t t a pipe oupling fixtu and heatber I9 is secured over the apertures l4 and deing 1 1; fixtur secured t t by means fines a pair of apertures through which the ends of my port and coupling of the conductors 18 extend to the terminals 20 Fig 2 is a fra nt side elevational View which are provided with screws 2! for attaching of the heating element fixture shown in Fig. 1. g g fi 3 g fi z g gfigg sl ligi g -of figh i il Fig. 3 is a fragmentary cross sectional view B along the line 3 in Fig ilulaagi'ngzcgrgie thae insulator and terminals to F coin osite v' r g i -2, gg gf i ig The heating element fixture is easily attached port g y t0 the up ng by placing a gasket 23 against Fig. 1 illustrates a water tank I of sheet metal f fg g ggi g gg g gfigg pg ig mounted on t ree legs 2 and provided with an iililet pipe outlet pipe fixture 4 and heating f j fi ?g g fgg z g gtgig z f E; e. ernent fix ure As is most particularly illustrated in Fig. 4 g g g ,5 2 9:33 :2 g g g f the wall of the tank is pierced as at 6 where it hom ogen 6021s Wan i 1 E W1 is desired to form the port and coupling for atseal to the body of z g en mg rom e ig i a i gi 5 i be elther m the The spinning operation which expands the end 51 a an mg l e .eatmg elemem fixture of the drawneck outwardly into the countersunk or in the top for attaching the outlet pipe fixportion f the ring is b d t develop sufiiture or at any other 'pomt Where 1t 15 deslrable cient heat to anneal or draw any bending strains to connect a fixture communicating with the which might develop in the drawneck because ins de of the tank. Piercing of the wall is preferthe coupling including the ring and drawneck Gone Whlle the 15 m fiat form and b61501 e iorms an attaching collar capable of withstands rolled or shaped into the final tank strucmg all of the stress required to tightly clamp in e. the fixture against the end of the drawneck.

After the wall is p erced as at 6 the metal The coupling fixture 4 for the outlet pipe may around the aperture is extruded outwardly of be formed in the same manner just described t ie tank to form a drawneck l of desired diamto provide a coupling ring 24 and drawneck in the top 25 of the tank to which the flange 26 or the outlet fixture may be secured. Obviously other connections could be made to the tank or a similar structure in the same manner. The extruding and spinning operations for forming the drawneck and attaching the coupling ring are easily and quickly performed rendering the formation of the port and coupling and therefore the final cost of the tank relatively inexpensive.

While the drawneck is preferably expanded outwardly into the ring by spinning, it may be expanded by other meansfor example, by swaging. However, I flnd that the expandingby spinning has many advantages, both from the practical standpoint and superiorstructure.

I have described a highly practical form of my coupling in two applications thereof so that others may reproduce the same for like or similar purposes without further description.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent, is:

1. A port and coupling for a tank having a sheet metal wall comprising a drawneck extruded outwardly from the wall of .said tank, and a coupling ring defining a beveled aperture pressed around said drawneck and spaced from the wall of-said tank with the beveled portion thereof facing outwardly, the outer end of said drawneck being spun outwardly to lap against said beveled portion, the end surface of said drawneck being machined flat in a plane parallel to said coupling ring and spaced therefrom, said rin defining a series of tapped apertures-therearound.

2. A port andcoupling for a tank having a metal wall comprising a drawneck extruded outwardly from the wall of said tank, and a coupling ring defining a countersunk aperture pressed around said drawneck and spaced from the wall of said tank with the countersunk portion thereof facing outwardly, the outer end of said drawneck being spun outwardly to lap against said countersunk portion, the end surface of said drawneck being machined flat in a plane parallel to said coupling ring, said ring definin a series of tapped apertures therearound,

3. A port and coupling for a tank comprising agdrawneck extruded outwardly from the wall of said tank, and a coupling ring defining a countersunk aperture pressed around said drawneck with the countersunk portion thereof facing outwardly, the outer end of said drawneck being spun outwardly to lap against said countersunk portion, the end surface of said drawneck being machined flat and spaced from said ring.

4. A water tank comprising sheet metal walls, portions of said walls being pierced and extruded outwardly to form'drawnecks, coupling rings having outwardly opening countersunk apertures formed therein pressed around said drawnecks and spaced from the walls of said'tank, the ends of said drawnecks being spun outwardly into said countersunk portions and machined fiat parallel said coupling rings, said coupling rings defining a series of tapped apertures spaced therearound, a heating element having a flat flange plate secured to one of said coupling collars by cap screws extending therethrough, a gasket clamped between said flange plate and the finished end of said drawneck, a pipe coupling fixture naving an annular flange secured to the other of said coupling collars by cap screws extending therethrough, and a gasket clamped between said other drawneck and said annular flange.

5. A water tank comprising a sheet metal wall, a portion of said wall being pierced and extruded outwardly to form a drawneck, a coupling ring pressed around said drawneck and spaced from the wall of said tank, the end ofsaid drawneck being expanded outwardly to overlap a portion of said rin and machined flat parallel to said coupling ring, said coupling ring defining a series of tapped apertures spaced therearound, a heating element having a flat flange plate secured to said coupling collar by cap screws extending therethrough, and a gasket clamped between said flange plate and the finished end of said drawneck.

6. A water tank comprisin a sheet metal wall, a portion of said wall being pierced and extruded outwardly to form a drawneck, a coupling ring having an outwardly openingcountersunk aperture formed therein pressed around said drawneck and spaced from the-wall of said tank,the end of said drawneck being expanded outwardly into said countersunkportion and machined flat parallel to said coupling ring, said coupling ring defining a series of tapped apertures spaced therearound, and a heating element having a flat flange plate secured to said coupling collar by cap screws extending therethrough.

7. A water tank-comprising a sheet metal wall, a portion of said wall being pierced and extruded outwardly to form a drawneck, a coupling ring having an outwardly opening countersunk aperture formed therein pressed around said draw neck and spaced from the wall ofsaid tank, the end of said drawneck being expanded-outwardly into said countersunk portion and machined flat,

, said coupling ring deflningaseries of tapped apertures spaced therearound,- a. pipe coupling fixture having an annular flange secured to said coupling collar by cap screws extending therethrough, anda gasket clamped between .said drawneck and said annular flange.

8. A water tank comprising a sheet metal wall, a portion of said wall being pierced and extruded outwardly to form a drawneck, a coupling ring havin an outwardly opening countersunk aperture formed therein pressed around said drawneck, the end of said drawneck being expanded outwardly into said countersunk portion and machined fiat in spaced relationship with said ring, said coupling ring defining. a series of tapped apertures spaced therearound, and a pipe coupling fixture having an annular flange secured to .said coupling collarby cap screws extending therethrough.

GERALD E.:WHITE;

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,792,928 Reigart Feb. 17, 1931 2,005,087 Kamack June 18, 1935 2,274,445 Greer Feb. 24, 1942 

